Diab-A-Sheet is a unique combination of Plastazote and PPT. The Plastazote molds dynamically to the foot during the gait cycle and with its comfortable feel, light density and conformability, it is the ultimate material for insensitive diabetic and hypersensitive arthritic feet. And while Plastazote provides conformability, PPT is able to maintain its original shape under severe pressure. This dual combination provides excellent shock absorption and cushioning.